A post-cast strip full-precast cover plate device

Abstract

The utility model relates to the field of pouring technology especially post-pouring zone full prefabricated cover plate device, including pre support cover plate, two fixed holes are opened on the pre support cover plate symmetry, two fixed holes all are fixedly connected with the thread sleeve in, two thread sleeves all are threadedly connected with the threaded column in, two threaded columns all are fixedly connected with the lifting ring, two fixed holes are covered through the covering mechanism. Covering mechanism plays the role of covering to fixed hole, prevents the entry of the earth impurity to avoid the situation that the thread sleeve is blocked, guarantees the repeated use of cover plate.

Description

Technical Field

[0001] This utility model relates to the field of casting technology, and in particular to a device for a fully prefabricated cover plate for post-cast strips. Background Technology

[0002] To address the potential for harmful cracks in ultra-long and ultra-wide concrete structures due to temperature changes and uneven shrinkage, designers intentionally leave a temporary "gap" in the structure, dividing it into several sections. This gap is not immediately filled with concrete. After the main structure has settled and stabilized, a higher-strength, micro-expansion concrete is poured to fill the gap, connecting it into a unified whole. This "gap" is called a post-cast strip. During the period of leaving the post-cast strip, this open gap will penetrate horizontal components such as floor slabs and foundation slabs, forming a large opening. This poses a serious safety hazard on the construction site and also affects construction access and work surfaces. Therefore, a sturdy slab must be used to cover this opening; this slab is called a cover plate, made of standardized precast reinforced concrete.

[0003] To facilitate flexible movement of the cover plate, workers installed lifting rings at pre-set positions on the cover plate. The precise engagement of the lifting rings with the crane hooks allowed for a smooth and stable relocation of the cover plate. During the installation of the lifting rings, embedded threaded sleeves were used to connect with threaded posts. This connection method is not only secure and reliable but also facilitates subsequent disassembly. Once the cover plate has been moved to the designated position and secured, the threaded posts can be easily unscrewed to remove the lifting rings, effectively ensuring the flatness of the cover plate surface and not affecting subsequent construction.

[0004] However, in the complex environment of construction sites, threaded sleeves are exposed after installation and lack effective protective measures. Impurities such as mud, sand, and rainwater generated during construction can easily enter the threaded sleeve. Since cover plates are commonly used components on construction sites and require repeated use, if the threaded sleeve becomes clogged with impurities, it will hinder the reuse of the cover plate. Utility Model Content

[0005] The purpose of this invention is to solve the shortcomings of existing technologies, such as the blockage of threaded sleeves and the inconvenience of repeated use of cover plates, and to propose a fully prefabricated cover plate device for post-pouring strips.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a fully precast cover plate device for post-pouring strips, including a pre-supported cover plate. Two fixing holes are symmetrically opened on the pre-supported cover plate. Threaded sleeves are fixedly connected to each of the two fixing holes. Threaded posts are threadedly connected to each of the two threaded sleeves. Lifting rings are fixedly connected to each of the two threaded posts. The two fixing holes are covered by a covering mechanism.

[0008] Preferably, the pre-supported cover plate has two abutment holes, which are respectively connected to two fixing holes. The lower ends of the two threaded sleeves are fixedly connected to fixing blocks, which are fixedly connected to the inner walls of the abutment holes.

[0009] Preferably, both the threaded post and the threaded sleeve are made of stainless steel.

[0010] Preferably, the covering mechanism includes a mounting groove, which is formed on the pre-supported cover plate and is connected to a fixing hole. A sealing cover is provided in the mounting groove, and the sealing cover is limited by a limiting mechanism.

[0011] Preferably, the limiting mechanism includes a connecting block, which is fixedly connected to the mounting groove. The lower end of the connecting block abuts against the sealing cover, and a spring is fixedly connected between the sealing cover and the mounting groove.

[0012] Preferably, a connecting post is fixedly connected to the upper surface of the sealing cover.

[0013] Preferably, the upper surface of the sealing cover abuts against a rotating block, and an installation cavity is formed on the inner wall of the installation groove, wherein the rotating block is rotatably connected to the installation cavity via a pin.

[0014] Preferably, the upper end of the connecting column is flush with the upper surface of the pre-supported cover plate.

[0015] The present invention proposes a fully prefabricated cover plate device for post-pouring strips, which has the following advantages: when the cover plate covers the opening, the threaded post is loosened and the lifting ring is removed to prevent the lifting ring from protruding. At the same time, the covering mechanism covers the fixing hole to prevent the entry of soil and impurities, thereby avoiding the blockage of the threaded sleeve and ensuring that the cover plate can be reused. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a fully prefabricated cover plate device for post-pouring strips proposed in this utility model;

[0017] Figure 2 This is a perspective view of the threaded column separation of a fully prefabricated post-cast strip cover plate device proposed in this utility model.

[0018] Figure 3 This utility model proposes a fully prefabricated cover plate device for post-pouring strips. Figure 2A three-dimensional sectional view;

[0019] Figure 4 This is a schematic diagram of the fixing hole portion of a fully prefabricated cover plate device for post-pouring strips proposed in this utility model;

[0020] Figure 5 This utility model proposes a fully prefabricated cover plate device for post-pouring strips. Figure 3 Enlarged view of section A in the middle.

[0021] In the diagram: 1. Pre-supported cover plate; 2. Lifting ring; 3. Connecting block; 4. Fixing block; 5. Threaded sleeve; 6. Connecting column; 7. Sealing cover; 8. Spring; 9. Mounting groove; 10. Mounting cavity; 11. Rotating block; 12. Threaded column; 13. Abutment hole; 14. Fixing hole. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figure 1-5 A fully precast cover plate device for post-pouring strips includes a pre-supported cover plate 1. Two fixing holes 14 are symmetrically opened on the pre-supported cover plate 1. Threaded sleeves 5 are fixedly connected to each of the two fixing holes 14. Threaded posts 12 are threadedly connected to each of the two threaded sleeves 5. Lifting rings 2 are fixedly connected to each of the two threaded posts 12. The two fixing holes 14 are covered by a covering mechanism. When the cover plate covers the open area, the threaded posts 12 are loosened, and the lifting rings 2 are removed, preventing the lifting rings 2 from protruding. Simultaneously, the covering mechanism covers the fixing holes 14, preventing the entry of soil and impurities, thus avoiding blockage of the threaded sleeves 5 and ensuring the cover plate can be reused.

[0024] Both the threaded post 12 and the threaded sleeve 5 are made of stainless steel. Other metal materials can also be made of stainless steel to prevent corrosion.

[0025] Example 2: Refer to Figure 1-5 As another preferred embodiment of this utility model, based on embodiment 1, two abutment holes 13 are provided on the pre-supported cover plate 1. The two abutment holes 13 are respectively connected to two fixing holes 14. The lower ends of the two threaded sleeves 5 are fixedly connected to fixing blocks 4. The fixing blocks 4 are fixedly connected to the inner wall of the abutment holes 13 and together with the abutment holes 13, they support the threaded sleeves 5 and prevent the threaded sleeves 5 from dislodging from the fixing holes 14 during lifting.

[0026] Example 3: Reference Figure 1-4In another preferred embodiment of this utility model, based on embodiment 2, the covering mechanism includes a mounting groove 9, which is formed on the pre-supported cover plate 1 and communicates with the fixing hole 14. A sealing cover 7 is provided inside the mounting groove 9, and the sealing cover 7 is limited by a limiting mechanism, which includes a connecting block 3. The connecting block 3 is fixedly connected to the mounting groove 9 and provides a covering protection for the spring 8. The lower end of the connecting block 3 abuts against the sealing cover 7. A spring 8 is fixedly connected between the sealing cover 7 and the mounting groove 9. Through the restoring force of the spring 8, the sealing cover 7 can firmly abut against the inner wall of the mounting groove 9, sealing the upper end of the threaded sleeve 5 and preventing dirt from entering the interior of the threaded sleeve 5. In this way, in subsequent use, the threaded sleeve 5 can be reconnected to the threaded post 12, thereby realizing the lifting and reuse of the cover plate.

[0027] During lifting, the lifting ring 2 is installed by connecting the threaded post 12 to the threaded sleeve 5. Then, the lifting ring 2 is lifted by a crane. After the cover plate is moved and installed, the lifting ring 2 is clamped with a wrench and the threaded post 12 is removed. Then, the rotating block 11 is rotated to release the limit on the connecting post 6. Under the restoring force of the spring 8, the connecting post 6 drives the sealing cover 7 to reset. At this time, the sealing cover 7 can seal the threaded sleeve 5 to prevent dirt from entering the inside of the threaded sleeve 5.

[0028] Example 4: Reference Figure 1-4 In another preferred embodiment of this utility model, based on embodiment 3, a connecting post 6 is fixedly connected to the upper surface of the sealing cover 7, and the upper end of the connecting post 6 is flush with the upper surface of the pre-supported cover plate 1. The connecting post 6 serves as a protrusion so that moving the connecting post 6 can drive the sealing cover 7 to move, exposing the threaded sleeve 5.

[0029] Example 5: In Example 4, when the threaded post 12 is installed in the threaded sleeve 5, the restoring force of the spring 8 will cause the sealing cap 7 to constantly abut against the threaded post 12, which may easily lead to damage to the threads of the threaded post 11. (Refer to...) Figure 1-5 As another preferred embodiment of this utility model, based on embodiment 4, the upper surface of the sealing cover 7 abuts against the rotating block 11, and the inner wall of the mounting groove 9 is provided with a mounting cavity 10. The rotating block 11 is rotatably connected to the mounting cavity 10 through a pin. The rotating block 11 plays a limiting role for the connecting column 6 and the sealing cover 7, preventing the sealing cover 7 from abutting against the thread of the threaded column 12 and avoiding damage to the thread.

[0030] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A fully precast cover plate device for post-pouring strips, comprising a pre-supported cover plate (1), characterized in that, The pre-supported cover plate (1) has two symmetrical fixing holes (14), each of the two fixing holes (14) is fixedly connected with a threaded sleeve (5), each of the two threaded sleeves (5) is threadedly connected with a threaded post (12), each of the two threaded posts (12) is fixedly connected with a lifting ring (2), and the two fixing holes (14) are covered by a covering mechanism. The covering mechanism includes an installation groove (9), which is opened on the pre-supported cover plate (1). The installation groove (9) is connected to the fixing hole (14). A sealing cover (7) is provided in the installation groove (9), and the sealing cover (7) is limited by a limiting mechanism.

2. The fully prefabricated cover plate device for post-pouring strips according to claim 1, characterized in that, The pre-supported cover plate (1) has two abutment holes (13), which are connected to two fixing holes (14) respectively. The lower ends of the two threaded sleeves (5) are fixedly connected to fixing blocks (4), which are fixedly connected to the inner wall of the abutment holes (13).

3. The fully prefabricated cover plate device for post-pouring strips according to claim 1, characterized in that, Both the threaded post (12) and the threaded sleeve (5) are made of stainless steel.

4. The fully prefabricated cover plate device for post-pouring strips according to claim 1, characterized in that, The limiting mechanism includes a connecting block (3), which is fixedly connected to the mounting groove (9). The lower end of the connecting block (3) abuts against the sealing cover (7), and a spring (8) is fixedly connected between the sealing cover (7) and the mounting groove (9).

5. The fully prefabricated cover plate device for post-pouring strips according to claim 1, characterized in that, A connecting post (6) is fixedly connected to the upper surface of the sealing cover (7).

6. The fully precast cover plate device for post-pouring strips according to claim 5, characterized in that, The upper surface of the sealing cover (7) is abutted by a rotating block (11), and an installation cavity (10) is provided on the inner wall of the installation groove (9). The rotating block (11) is rotatably connected to the installation cavity (10) by a pin.

7. A fully prefabricated cover plate device for post-pouring strips according to claim 5, characterized in that, The upper end of the connecting column (6) is flush with the upper surface of the pre-supported cover plate (1).

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